Method, device, and computer program product for file system

A device, comprising:

• at least one processor;
• and
• a storage apparatus, the storage apparatus being coupled to the at least one processor and having instructions stored thereon, wherein the instructions, when executed by the at least one processor, cause the device to perform actions comprising:
• determining a delegation enable status of a file system;
• determining the a of access requests from clients to a file in the file system within a defined time period;
• determining a recall ratio within the defined time period based on the delegation enable status and the number of access requests;
• and
• updating the delegation enable status of the file system by comparing the recall ratio with a delegation enable threshold.

A computer program product, the computer program product being stored on a non-transitory computer-readable medium and comprising machine-executable instructions, wherein the machine-executable instructions, when executed, cause a machine to perform actions comprising:

• determining a delegation enable status of a file system;
• determining a number of a plurality of access requests from a plurality of clients to a file in the file system within a predetermined time period;
• determining a recall ratio within the predetermined time period based on the delegation enable status and the number of the plurality of access requests;
• and
• updating the delegation enable status of the file system by comparing the recall ratio with a delegation enable threshold.